The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A126119 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A126119

Numerators of sequence of fractions with e.g.f. (1+x)/(1-x)^(3/2).
(history; published version)

#17 by Joerg Arndt at Sat Mar 01 05:00:56 EST 2014

STATUS

proposed

approved

#16 by Michel Marcus at Sat Mar 01 01:45:57 EST 2014

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editing

proposed

#15 by Michel Marcus at Sat Mar 01 01:45:53 EST 2014

FORMULA

From _Sergei N. Gladkovskii, _, Jul 23 2012: (Start)

PROG

(PARI) {a(n)= if(n<0, 0, n!* polcoeff( (1+2*x)/ (1-2*x +x*O(x^n))^(3/2), n))} /* _Michael Somos _, Apr 08 2007 */

STATUS

proposed

editing

#14 by Vincenzo Librandi at Sat Mar 01 01:27:02 EST 2014

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editing

proposed

#13 by Vincenzo Librandi at Sat Mar 01 01:26:53 EST 2014

LINKS

Vincenzo Librandi, <a href="/A126119/b126119.txt">Table of n, a(n) for n = 0..200</a>

STATUS

approved

editing

#12 by Vaclav Kotesovec at Tue Feb 25 03:41:17 EST 2014

STATUS

editing

approved

#11 by Vaclav Kotesovec at Tue Feb 25 03:41:11 EST 2014

FORMULA

a(n) ~ 2^(n+5/2) * n^(n+1) / exp(n). - Vaclav Kotesovec, Feb 25 2014

#10 by Vaclav Kotesovec at Tue Feb 25 03:39:14 EST 2014

MATHEMATICA

CoefficientList[Series[(1+2*x)/(1-2*x)^(3/2), {x, 0, 20}], x] * Range[0, 20]! (* Vaclav Kotesovec, Feb 25 2014 *)

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approved

editing

#9 by Joerg Arndt at Mon Jul 23 14:28:34 EDT 2012

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proposed

approved

#8 by Sergei N. Gladkovskii at Mon Jul 23 09:57:16 EDT 2012

STATUS

editing

proposed

Discussion

Mon Jul 23

14:28

Joerg Arndt: OK, thanks!